In terms of size, the M-Audio Studiophile DX4 (a repurposed bookshelf-speaker system) isn't well suited to the desktop, but you probably won't notice the forced fit once you hear what it can do. We know of no mid-priced computer speakers that can match the DX4's sonic detail, transparency, and silky high end.

Despite M-Audio's best efforts, the DX4 betrays its roots as a small studio monitor system. Instead of sound-board-standard 1/8-inch mini-jacks (an adaptor is provided), it has RCA and pro-style quarter-inch TRS inputs. The satellites' 5.75- by 6.25-inch footprint consumes way too much desktop space, and their thick wooden enclosures are heavier (albeit far more rugged) than those of the average PC speaker. Each cabinet contains a 1-inch Mylar tweeter and a 4-inch midrange driver, and the system's only controls are a volume knob on the front of one unit and power and midrange boost switches on the back.

The DX4's response curve revealed a few notable peaks and dips, but on the whole, it was significantly flatter from 400 Hz up than most desktop systems we've tested. Output at 16 kHz was down only 4 dB from our 1 kHz reference, and the system extracted a surprisingly extended low end from its petite woofers, dropping only 6 dB at 50 Hz. Our test unit didn't get too loud, but its 89 dB maximum output level (unweighted pink noise measured at 18 inches) is respectable for an 18-watts-per-channel two-piece system.

The DX4 was even more impressive in our subjective listening tests. The only desktop speakers we've reviewed that can match its transparency, imaging, and overall feeling of vibrancy are the classic (and long-discontinued) Sonigistix Monsoon flat-panel systems and Cambridge SoundWorks' much costlier MegaWorks 215 ($319.99 direct). The DX4 has little deep-bass output, but what low end it does produce is remarkably snappy and detailed. So long as we kept volume levels within reason, the system never suffered from a hint of harshness at the high end.

The DX4's limited bass and dynamic range make it a questionable choice for hardcore gamers. But if you're the type of listener who values sonic accuracy over raw power, you won't find a better desktop speaker for the price.

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